Ernst lompert



E. LOMPERT.

Patented Deo. 13,1881.

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AUTOMATIC BOILER FEEDER.

NTTED STATES PATENT OFFICE@ ERNST LOMPERT, on BUoKAU, NEAR' MAGDEBURG, PRUSSIA, GERMANY, ASSIGNOR To RICHARD LAUGnNsIRPn-N, oF SAME PLACE.

AUTOMATIC BOILER-FEEDER.

SPECIFICATION forming part of Letters Patent. No. 250,931, dated December 13, 1881. Application filed June 29, 1881. (No model.) Patented in Germany December 24, 1879.

T o all whom 'it may concern:

Be it known that I, ERNSa1 LOMPERT, a subject of the King of Prussia, residing at Buckau, near Magdeburg, in the Kingdom of Prussia and Empire of Germany, have invented new and useful Improvements in Automatic Boiler- Feeders, of which the following is a specification.

This invention relates to a boiler-feeder of that class which is operated by the action of the steam in the boiler, being alternately filled partly with steam,an d aftercondensation of this steam with water drawn in by suction, each charge of water being discharged into the boiler below bythe steam which enters subsequently. The precise construction of my apparatus will be hereinafter fully described This invention is illustrated in the accompanying drawings, in which Figure 1 represents a vertical section of my boiler-feeder. Fig. 2 is a detached section of the compound valve, which forms one of the principal elements of my boiler-feeder, on a larger scale than the previous figure, the upper valve being closed. Fig. 3 is a similar view whenthe npper valve is open.

Similar letters indicate corresponding parts.

In the drawings, the letters A B designate two chambers, which are situated side by side, and communicate rwith each other and at the top and bottom, the communication at the top being dependent upon the position ofthe valve b. This valve is connected with the steamsupply valve a in such a manner that if one opens the other is closed, and vice versa. Both said valves (see Figs. 2 and 3) are fitted, like pistons, into cylindrical seats, the depth of which is equal to one-halfof the movement or Stroke of the valves, so that neither' of the valves will begin to open before the other is closed.

Fig. l represents my apparatus during the' operation of feeding, the water contained in the chamber A being each time discharged. Valve bis closed and valve a is open. (See also Fig. 2.) The Steam from the boiler enters through the pipe g and Valve a into the chamber A, while the Water from this chamber is driven through the chamber B, checkvalve c, and feed-pipe q into the boiler.

It is obvious that the valve b, in order to remain closed during the feed operation, must be subjected to the action ofa spring or weight, which, together With the pressure exerted by the Water escaping from the chambers A B, retains said valve in its seatagainst the press ure of the steam entering through the pipe g. As the water in the chamberA sinks down the resistance offered to the advancing steam by the column of water in the chamber B increases until the pressure of the steam overcomes the resistance of the weight or Spring actingon the valve b,and this valve is opened. As soon as it begins to rise it receives an impulse on its entirebottom surfaceand it moves up with a rush, thereby causing the valve a to closc almost instantaneously. (See Fig. 3.) By this movement the communication at the top ofthe chambers A B is opened, the water rushes back from chamber B into chamber A, the steam condenses, and the apparatus draws in a fresh supply ot' water through the suction-valve d. When the suction has been completed the steam-valve al cannot open and a new feed cannot take place luntil the boilerpressure is transmitted to the feed apparatus. This transmission of pressure can be effected by a separate pipe from the steam or water space of the boiler, or by leakage in the steamvalve a or in the valves of the feed-pipe.

In order to regulate the operation ot' the feed apparatus by the Waterlevel in the boiler,

different means can be employed. The simplest way is to extend the steam-pipe to the desired water-level. As soon as the water reaches this level itrises in the Steam-pipe, and the feed is immediately stopped, and does not again begin until the Steam-pipe becomes filled with steam. In order to prevent in this case thewater from passinginto the feed apparatus, a small pipe must be provided, which extends from the top part of the Steam-pipe into the constant steam-space of the boiler, and which can be adjusted to admitsteam enough for pre venting the boiler-water from passing into the feed apparatus, and at the same time to permit the feed operation to progress, if only in a very limited degree. The same effect can also be produced by throttlin g the Steam-pipe or the feed-pipe by the action of a float.

IOO

If for the transmission of pressure to the apparatus after each suction, as mentioned above, a separate conduit is provided, it is sufficient, instead of throttling all the Working steam of the apparatus and the feed-water,respectively, to cut off only the separate conduit, since by these means, aiter each suction, the opera-tion ofthe apparatusis stopped. This method I have employed in my apparatus by means ofthe diaphragm mechanism C. The chamber containing the diaphragm 7c is connected by pipes l h with apipe, if, which extends into the boiler to the desired water-level. This pipe, therefore, is filled with water or with steam, according to the water-level in the boiler being above or below7 its mouth. As long as the pipe i contains steam the diaphragm 7c is exposed tothe full pressure ofthe water remaining in thepipes l and h, and it is caused to move the valve a away from its seat. This valve, being made in the form of a piston, prevents the passage ot' the steam from the pipe z',- but it opens the conduit e e leading from the water-space of the boiler to the feed apparatus. The boiler-pressure is therefore transmitted to the feed apparatus immediately after each suction by means ot' an opening, p, in the valve n, and a constant feed takes place; but as vsoon as water rises in the pipe i the pressure ofthe columns of water on the diaphragm 7c is balanced, and the valve n is closed by the boiler-pressure acting upon its back, aided, it' requisite, by a spring. The conduit e e is closed, and after the next succeeding suction the operation of the feed apparatus stops.

The diaphragm mechanism is also used as an alarm. In this case the valve u serves simply as an escape, which allows the steam from the pipe t' to pass to an alarm-whistle whenever the water in the boiler sinks below the desired level. The water-pipes l h preserve the diaphragm 7c from becoming heated, so that sensitive unmetallic diaphragms-such as india-rubber, rubber cloth, or leathercan be used.

My apparatus can also be used as a pump for raising various liquids.

In order to have a sure control of the operation of my apparatus, I apply a double control by means of a counting device, m, and a vacuum-gage, o. The tirst receives its motion by a diaphragm, one face of which communicates with the feed apparatus, while the opposite face is exposed to the atmosphere. For each feed, therefore,'a uctuation of the diaphragm, and consequently a forward motion of the counting mechanism,takes place. Since the apparatus furnishes a uniform quantity of water for each feed, this counting device can be used for measuring the quantity of the feedwater. By the vacuum-gage the pressure existing in the feed apparatus can be observed at any moment.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a water-feeder for steam-boilers, the two upright chambers A and B, arranged adjacent to each other and in communication at their lower portions, With their upper portions connected as described, in combination with valves a and b, arranged in valve-chambers at or near the upper ends of said chambers, and automatically operating to control the communication between the chambers at that point, a steam-supply pipe, g, leading from the boiler, and a water-supply pipe, q, leading to the boiler, the whole being arranged to operate substantially as described.

2. The combination, substantially as hereinbefore described, ot' the two chambers A B, valves a b, steam-pipe g, feed-pi pe q, valve a, and conduit e c.

3. The combination, substantially as hereinbefore described, of the two chambers A B, valves a b, steam-pipe g, feed-pipe q, valve n, conduit e e', and diaphragm lo.

4. The combination, substantially as hereinbefore described, of the two chambers A B, valves a b, steam-pipe g, feed-pipe q, valve a, conduite e', diaphragm 7c, and pipes fl h.

5. The combination, substantially as hereinbefore described, of the two chambers A B, valves a4 b, steam-pipe g, feed-pipe q, vacuumgage m, and counting device o.

In testimony whereof Ihave hereunto set my hand in the presence of two subscribing witnesses.

ERNST LOMPERT.

lVitnesses:

WILLIAM C. Fox, Fn. Luanwre. 

